/Engine/Plugins/Editor/UVEditor/Source/UVEditorTools/Public/ToolTargets/UVEditorToolMeshInput.h
If updating the preview objects, note that the functions do not try to cancel any active computations, so an active computation could reset things once it completes. Can be passed in as a ChangedVids/ChangedElements/ChangedConnectivityTids arguments as an equivalent of passing a pointer to an empty array.
static const [TArray](API\Runtime\Core\Containers\TArray)< int32 > *const NONE_CHANGED_ARG = &UVEditorToolMeshInputLocals::EmptyArray;